Home / 109,367.72-163,937.82-79,309.16

Finding the Fourth Proportional to 109,367.72, 163,937.82 and 79,309.16

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Solution

The fourth proportional to 109,367.72, 163,937.82 and 79,309.16 is: 118,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,367.72 : 163,937.82 = 79,309.16 : x
  2. Step 2: Convert to fraction form
    109,367.72/163,937.82 = 79,309.16/x
  3. Step 3: Cross multiply
    109,367.72x = 163,937.82 × 79,309.16
  4. Step 4: Simplify right side
    109,367.72x = 13,001,770,796.43
  5. Step 5: Solve for x
    x = 13,001,770,796.43/109,367.72
  6. Step 6: Final answer
    x = 118,881.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.